Weather Alert in New York
Special Weather Statement issued March 4 at 2:49AM EST by NWS Buffalo NY
AREAS AFFECTED: Niagara; Orleans; Monroe; Wayne; Northern Cayuga; Oswego; Jefferson; Lewis; Northern Erie; Genesee; Wyoming; Livingston; Ontario; Chautauqua; Cattaraugus; Allegany; Southern Erie
DESCRIPTION: Areas of fog will persist across much of the area through early this morning...and will help to maintain existing wet ground conditions. Coupled with temperatures around or a little below freezing...this will allow wet roads, bridges, parking lots, driveways and sidewalks to become icy in spots. If you will be out and about this morning...be careful for black ice and slick spots on area roadways, bridges, overpasses, parking lots, driveways, and sidewalks...particularly where these surfaces have not been treated. The black ice threat will come to an end by mid to late morning as the fog dissipates, road surfaces dry out, and temperatures rise above freezing.
INSTRUCTION: N/A
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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